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J. H. CONNELLY.

Combined Lamp Chimney and Shade. No. 56,010. Patented July3, 1866.

.4 A W/TA EssES I N. PETERS Phnwunm n mr. Washington. D. C.

NIT'ED' STATES PATENT OFFICE.

JOSEPH H. CONNELLY, OF WHEELING, WEST VIRGINIA.

COMBIN ED LAMP CHIMNEY AND SHADE.

To all whom it may concern.-

Be it known that I, JOSEPH H. CoNNELLY, of Wheeling, in the county ofOhio and State of West Virginia, have invented a new and Improved LampChimney and Shade; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable those skilled inthe art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure l is a vertical central section of my invention, taken ,in theline 00 a, Fig. 2; Fig. 2, a plan or top view of the same.

Similar letters of reference indicate corresponding parts.

The object of this invention is to obtain a chimney for lamps which willnot be liable to break or fracture under the heat of the flame, andwhich will afford a good draft, so that the flame of the lamp will becopiously supplied with oxygen to support proper combustion and at thesame time admit of a shade being applied to the chimney without theliability of fracturing it.

The ordinary glass chimneys for lamps are liable to break from twocauses: first, the intense heat to which they are subjected and theunequal expansion of the chimney under said heat; and, second, in theapplication of a shade or reflector, which hitherto has been providedwith a clasp to rest on the chimney, and either retarding or resistingits expansion by weight or pressure, or by being applied when thechimney is hot, serving to check or fracture it by sudden contraction,whereby the clasp rests upon it. These difflculties, it is bel eved, arefully obviated by my invention.

A represents the lower and glass portion of my improved chimney, whichis of cylindrical form and of equal diameter its entire length, with theexception of its lower end, which is formed with a neck, a, to fit onthe lampburner, as usual. In consequence of having the part A of equaldiameter throughout, it will be heated equally at all parts, or nearlyso, and it will be at every point sufficiently far from the flame toavoid the latter coming in contact with it. The ordinary glass chimneys,in consequence of being contracted at their upper part, heat sooner andmuch more intensely at their upper than at their lower part, and arevery liable to fracture from that ca-use a difficulty which is obviatedby my invention.

B represents a metal top, which is fitted on the upper end of the glasspart A. This top may be of any desired shape or form; and (J is a shade,which is constructed of sheet metal and of concave form. This shade mayrest directly on the metal top B, or on wires or rods attached thereto;but it should not touch the.

glass part A of the chimney at any point, nor should it rest in contactwith any larger surface of the metal top B than is necessary for itssupport. It is thus kept from heating and affords space for thecirculation of air between it and the chimney. This shade O, in consequence of being kept free from the glass part A, may be applied to thechimney at any time without danger of fracturing the-same.

The chimney and shade may be constructed at a reasonable cost, and thegreat expense attending the breaking of chimneys from the causesspecified will be avoided. In burning coal-oil theexpense attending thebreaking of chimneys is frequently nearly equal to the cost of the oilitself.

f Having thus described my invention, I claim as new and desire tosecure by Letters Patent- The combination, with the glass chimney A andmetal top B, of the shade or reflector 0, when provided withsupporting-points c c c, and otherwise constructed and applied, asherein specified, to leave an air-space between it and the chimney,lessen the conduction of heat, permit its ready removal, and amidconfining the glass, substantially as set forth.

JOSEPH H. CONNELLY.

Witnesses:

WM. R. DOWNING, A. N. JOHNSTON, JOSEPH FORD.

